Technical Data - Baxi 105 HE Installation And Servicing Instructions

Appliance Type
C
12
Appliance Category CAT II
Heat Input CH
Max Min
kW 30.5 11.9
Heat Output CH (Non-Condensing)
Max Min
kW 29.6 11
Heat Output CH (Condensing)
Max Min
kW 31 11.3
Heat Input DHW
Max
kW 30.5
Heat Output DHW
Max
kW 29.6
Max Gas Rate (Natural Gas - G20)
(After 10 mins)
m /h 3.22
3
Burner Pressure (Natural Gas - G20)
Max Rate
mbar 12.1 ± 0.5
Inlet Pressure (Natural Gas - G20)
mbar 20
Burner Injector (Natural Gas - G20)
15 x 1.25mm Diameter
Electrical Supply
(Appliance must be connected to an
earthed supply)
Power Consumption
External Fuse Rating
Internal Fuse Rating
Fuse 2A Fast Blow to BS 4265
SEDBUK Declaration For Combi 105 HE
The seasonal efficiency (SEDBUK) is 87.3% (89.4% LPG)
Band B
This value is used in the UK Government's Standard Assessment
Procedure (SAP) for energy rating of dwellings. The test data from
which it has been calculated have been certified by 0051.
LPG Propane - G31
Burner Injector 15 x 0.77mm diameter
Burner Pressure Max Rate
Propane mbar
32.3 ± 0.5
Inlet Pressures
mbar 37
© Baxi Heating UK Ltd 2011
C C
Electrical Protection
32 52
NO x Class
2H 3P
Condensate Drain
Flue Terminal
Dimensions
Connections
Gas Supply
Central Heating Flow
Central Heating Return
Cold Water Mains Inlet
DHW Flow
Pressure Relief Discharge
Outercase Dimensions
Casing Height
Overall Height Inc Flue
Elbow
Casing Width
Casing Depth
Clearances
Above Casing
Below Casing
Front
Front
Min Rate
L.H. Side
2.1 ± 0.2
R.H. Side
*NOTE: The boiler can be operated with a
clearance of 5mm at the right. This is also
sufficient for routine maintenance. However a
clearance of 20mm is required if it is necessary to
remove the secondary heat exchanger. This
230V~ 50H z
should be considered when siting the appliance
and in the event of any subsequent alterations in
the area of installation
180W
Weights
Packaged Boiler Carton
3A
Installation Lift Weight
Min Rate
5.2 ± 0.2

4.0 Technical Data

4.1 Combi 105 HE
IPX5D
3
1" BSP
Diameter 100mm
Projection 125mm
copper tails
- 22mm
- 22mm
- 22mm
- 15mm
- 15mm
- 15mm
- 780mm
- 965mm
- 450mm
- 345mm
200 mm Min
200 mm Min
450 mm Min
(For Servicing)
5 mm Min
(In Operation)
5 mm Min
5 mm Min
(In Operation)
20mm Min
(See Note*)
kg
54
44
Pump - Available Head
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
0 200 400
Flow Rate (l/h)
Central Heating Primary Circuit
Pressures
Safety Discharge
Max Operating
Min Operating
Recommend Operating
DHW Circuit bar
Pressures
Max Operating 8
Min Operating 0.2
Min Operating Pressure
at 13.2 l/min 0.96
Flow Rates
l/min
DHW Flow Rate
@ 30°C Rise 14.1
DHW Flow Rate
@ 35°C Rise 12.1
Min Working
DHW Flow Rate 2.5
Pump
Available Head See graph below
Expansion Vessel - (For Central Heating
only. Integral with appliance)
bar
Min Pre-charge Pressure 0.5
litre
Max Capacity of
CH System 125
Primary Water Content 1.2
of Boiler (unpressurised)
Temperatures
C.H. Flow Temp
(adjustable)
30°C to 85°C
max
D.H.W. Flow Temp
(adjustable)
35°C to 65°C
max
dependent upon flow rate
600 800 1000 1200
bar
3
2.5
0.5
1-2
(± 5°C)
(± 5°C)
9